作者:Béatrice Bonnet、Yann Le Gallic、Gérard Plé、Lucette Duhamel
DOI:10.1055/s-1993-25999
日期:——
1,1-Diiodoalkenes 1 were readily prepared from carbonyl compounds 2 and diethyl diiodomethylphosphonate (3), generated in situ from commercial diethyl iodomethylphosphonate (4) or diethyl methylphosphonate (5). Starting from aldehydes, iodoacetylenes 6 could be obtained directly in situ by dehydrohalogenation of diiodoalkenes 1.
Synthesis of the four enantiomerically-pure isomers of 15-F2t-isoprostane
作者:Douglass F. Taber、Kazuo Kanai
DOI:10.1016/s0040-4020(98)83038-x
日期:1998.9
Syntheses of the four enantiomerically-pure isomers of 15-F2t-isoprostane are described. The key step is the lipase-mediated resolution of a pseudo-meso diol, to give the regioisomeric acetates in high enantiomeric purity. Improved procedures for the preparation of the pseudo-meso diol are also reported.